./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/20_lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/20_lamport.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4bd0a104431602f65d67040bef1f743648c257ee ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:21,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:21,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:21,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:21,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:21,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:21,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:21,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:21,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:21,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:21,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:21,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:21,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:21,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:21,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:21,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:21,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:21,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:21,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:21,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:21,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:21,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:21,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:21,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:21,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:21,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:21,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:21,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:21,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:21,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:21,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:21,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:21,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:21,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:21,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:21,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:21,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:21,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:21,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:21,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:21,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:21,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:21,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:21,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:21,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:21,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:21,804 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:21,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:21,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:21,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:21,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:21,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:21,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:21,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:21,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:21,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:21,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:21,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:21,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:21,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:21,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:21,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:21,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:21,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:21,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd0a104431602f65d67040bef1f743648c257ee [2019-10-22 08:56:21,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:21,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:21,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:21,857 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:21,857 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:21,858 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/20_lamport.i [2019-10-22 08:56:21,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/data/7a52c144a/90e08178bd53472da8f6aef5ded56ae7/FLAG952c6149b [2019-10-22 08:56:22,344 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:22,345 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/sv-benchmarks/c/pthread-ext/20_lamport.i [2019-10-22 08:56:22,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/data/7a52c144a/90e08178bd53472da8f6aef5ded56ae7/FLAG952c6149b [2019-10-22 08:56:22,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/data/7a52c144a/90e08178bd53472da8f6aef5ded56ae7 [2019-10-22 08:56:22,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:22,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:22,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:22,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:22,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:22,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dde477f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22, skipping insertion in model container [2019-10-22 08:56:22,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,384 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:22,415 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:22,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:22,822 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:22,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:22,935 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:22,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22 WrapperNode [2019-10-22 08:56:22,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:22,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:22,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:22,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:22,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:22,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:22,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:22,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:22,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... [2019-10-22 08:56:22,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:22,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:22,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:22,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:22,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 08:56:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 08:56:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:23,050 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:56:23,335 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:23,335 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 08:56:23,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:23 BoogieIcfgContainer [2019-10-22 08:56:23,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:23,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:23,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:23,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:23,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:22" (1/3) ... [2019-10-22 08:56:23,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2df988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:23, skipping insertion in model container [2019-10-22 08:56:23,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:22" (2/3) ... [2019-10-22 08:56:23,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2df988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:23, skipping insertion in model container [2019-10-22 08:56:23,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:23" (3/3) ... [2019-10-22 08:56:23,343 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2019-10-22 08:56:23,369 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,369 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,369 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,369 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,370 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,370 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:23,377 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:56:23,384 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:23,391 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:56:23,400 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:56:23,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:23,417 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:23,417 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:23,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:23,417 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:23,417 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:23,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:23,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:23,427 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 90 transitions [2019-10-22 08:56:23,479 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 771 states. [2019-10-22 08:56:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2019-10-22 08:56:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:56:23,487 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:23,488 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:23,490 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1219876355, now seen corresponding path program 1 times [2019-10-22 08:56:23,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:23,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684269300] [2019-10-22 08:56:23,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:23,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684269300] [2019-10-22 08:56:23,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:23,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:23,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833043010] [2019-10-22 08:56:23,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:23,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:23,669 INFO L87 Difference]: Start difference. First operand 771 states. Second operand 2 states. [2019-10-22 08:56:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:23,711 INFO L93 Difference]: Finished difference Result 771 states and 1810 transitions. [2019-10-22 08:56:23,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:23,712 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-22 08:56:23,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:23,729 INFO L225 Difference]: With dead ends: 771 [2019-10-22 08:56:23,729 INFO L226 Difference]: Without dead ends: 716 [2019-10-22 08:56:23,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:23,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2019-10-22 08:56:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2019-10-22 08:56:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2019-10-22 08:56:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1700 transitions. [2019-10-22 08:56:23,810 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1700 transitions. Word has length 17 [2019-10-22 08:56:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:23,811 INFO L462 AbstractCegarLoop]: Abstraction has 716 states and 1700 transitions. [2019-10-22 08:56:23,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1700 transitions. [2019-10-22 08:56:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:23,812 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:23,812 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:23,812 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash 666702359, now seen corresponding path program 1 times [2019-10-22 08:56:23,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:23,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443492004] [2019-10-22 08:56:23,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:23,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443492004] [2019-10-22 08:56:23,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:23,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:23,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981118651] [2019-10-22 08:56:23,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:23,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:23,883 INFO L87 Difference]: Start difference. First operand 716 states and 1700 transitions. Second operand 3 states. [2019-10-22 08:56:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:23,919 INFO L93 Difference]: Finished difference Result 707 states and 1649 transitions. [2019-10-22 08:56:23,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:23,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 08:56:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:23,923 INFO L225 Difference]: With dead ends: 707 [2019-10-22 08:56:23,923 INFO L226 Difference]: Without dead ends: 531 [2019-10-22 08:56:23,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2019-10-22 08:56:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 516. [2019-10-22 08:56:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2019-10-22 08:56:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1221 transitions. [2019-10-22 08:56:23,967 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1221 transitions. Word has length 23 [2019-10-22 08:56:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:23,967 INFO L462 AbstractCegarLoop]: Abstraction has 516 states and 1221 transitions. [2019-10-22 08:56:23,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1221 transitions. [2019-10-22 08:56:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:56:23,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:23,969 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:23,969 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1095347577, now seen corresponding path program 1 times [2019-10-22 08:56:23,970 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:23,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734454230] [2019-10-22 08:56:23,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:23,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734454230] [2019-10-22 08:56:24,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672179848] [2019-10-22 08:56:24,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,024 INFO L87 Difference]: Start difference. First operand 516 states and 1221 transitions. Second operand 3 states. [2019-10-22 08:56:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,042 INFO L93 Difference]: Finished difference Result 485 states and 1140 transitions. [2019-10-22 08:56:24,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-22 08:56:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,045 INFO L225 Difference]: With dead ends: 485 [2019-10-22 08:56:24,045 INFO L226 Difference]: Without dead ends: 385 [2019-10-22 08:56:24,045 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-10-22 08:56:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2019-10-22 08:56:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-22 08:56:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 916 transitions. [2019-10-22 08:56:24,059 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 916 transitions. Word has length 27 [2019-10-22 08:56:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,059 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 916 transitions. [2019-10-22 08:56:24,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 916 transitions. [2019-10-22 08:56:24,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:56:24,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,062 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,062 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1294731827, now seen corresponding path program 1 times [2019-10-22 08:56:24,062 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673560160] [2019-10-22 08:56:24,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,063 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673560160] [2019-10-22 08:56:24,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807421700] [2019-10-22 08:56:24,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,106 INFO L87 Difference]: Start difference. First operand 385 states and 916 transitions. Second operand 3 states. [2019-10-22 08:56:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,161 INFO L93 Difference]: Finished difference Result 494 states and 1165 transitions. [2019-10-22 08:56:24,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:56:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,164 INFO L225 Difference]: With dead ends: 494 [2019-10-22 08:56:24,164 INFO L226 Difference]: Without dead ends: 407 [2019-10-22 08:56:24,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2019-10-22 08:56:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 390. [2019-10-22 08:56:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-10-22 08:56:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 902 transitions. [2019-10-22 08:56:24,177 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 902 transitions. Word has length 36 [2019-10-22 08:56:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,177 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 902 transitions. [2019-10-22 08:56:24,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 902 transitions. [2019-10-22 08:56:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:56:24,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,179 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,180 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,180 INFO L82 PathProgramCache]: Analyzing trace with hash -415710077, now seen corresponding path program 2 times [2019-10-22 08:56:24,180 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308445258] [2019-10-22 08:56:24,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308445258] [2019-10-22 08:56:24,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724771070] [2019-10-22 08:56:24,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,242 INFO L87 Difference]: Start difference. First operand 390 states and 902 transitions. Second operand 3 states. [2019-10-22 08:56:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,260 INFO L93 Difference]: Finished difference Result 570 states and 1234 transitions. [2019-10-22 08:56:24,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:56:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,265 INFO L225 Difference]: With dead ends: 570 [2019-10-22 08:56:24,265 INFO L226 Difference]: Without dead ends: 570 [2019-10-22 08:56:24,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2019-10-22 08:56:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 411. [2019-10-22 08:56:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-22 08:56:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 930 transitions. [2019-10-22 08:56:24,281 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 930 transitions. Word has length 36 [2019-10-22 08:56:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,283 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 930 transitions. [2019-10-22 08:56:24,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 930 transitions. [2019-10-22 08:56:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:56:24,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,285 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1163711037, now seen corresponding path program 3 times [2019-10-22 08:56:24,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930316716] [2019-10-22 08:56:24,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930316716] [2019-10-22 08:56:24,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:24,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166699847] [2019-10-22 08:56:24,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:24,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:24,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:24,357 INFO L87 Difference]: Start difference. First operand 411 states and 930 transitions. Second operand 4 states. [2019-10-22 08:56:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,389 INFO L93 Difference]: Finished difference Result 503 states and 1037 transitions. [2019-10-22 08:56:24,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-22 08:56:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,394 INFO L225 Difference]: With dead ends: 503 [2019-10-22 08:56:24,394 INFO L226 Difference]: Without dead ends: 500 [2019-10-22 08:56:24,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-22 08:56:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 384. [2019-10-22 08:56:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2019-10-22 08:56:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 823 transitions. [2019-10-22 08:56:24,410 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 823 transitions. Word has length 36 [2019-10-22 08:56:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,412 INFO L462 AbstractCegarLoop]: Abstraction has 384 states and 823 transitions. [2019-10-22 08:56:24,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 823 transitions. [2019-10-22 08:56:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:56:24,414 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,414 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,414 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash 986871566, now seen corresponding path program 1 times [2019-10-22 08:56:24,415 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842839865] [2019-10-22 08:56:24,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842839865] [2019-10-22 08:56:24,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525028696] [2019-10-22 08:56:24,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,468 INFO L87 Difference]: Start difference. First operand 384 states and 823 transitions. Second operand 3 states. [2019-10-22 08:56:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,524 INFO L93 Difference]: Finished difference Result 343 states and 668 transitions. [2019-10-22 08:56:24,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:56:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,526 INFO L225 Difference]: With dead ends: 343 [2019-10-22 08:56:24,526 INFO L226 Difference]: Without dead ends: 265 [2019-10-22 08:56:24,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-10-22 08:56:24,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 236. [2019-10-22 08:56:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-22 08:56:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 446 transitions. [2019-10-22 08:56:24,534 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 446 transitions. Word has length 36 [2019-10-22 08:56:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,535 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 446 transitions. [2019-10-22 08:56:24,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 446 transitions. [2019-10-22 08:56:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:24,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,537 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,538 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1794215882, now seen corresponding path program 1 times [2019-10-22 08:56:24,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228342653] [2019-10-22 08:56:24,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228342653] [2019-10-22 08:56:24,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666185415] [2019-10-22 08:56:24,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,587 INFO L87 Difference]: Start difference. First operand 236 states and 446 transitions. Second operand 3 states. [2019-10-22 08:56:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,597 INFO L93 Difference]: Finished difference Result 228 states and 430 transitions. [2019-10-22 08:56:24,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 08:56:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,601 INFO L225 Difference]: With dead ends: 228 [2019-10-22 08:56:24,601 INFO L226 Difference]: Without dead ends: 204 [2019-10-22 08:56:24,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-22 08:56:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2019-10-22 08:56:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-10-22 08:56:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 385 transitions. [2019-10-22 08:56:24,607 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 385 transitions. Word has length 39 [2019-10-22 08:56:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,607 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 385 transitions. [2019-10-22 08:56:24,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 385 transitions. [2019-10-22 08:56:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:24,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:24,609 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:24,609 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1082705645, now seen corresponding path program 1 times [2019-10-22 08:56:24,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:24,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553475213] [2019-10-22 08:56:24,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:24,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:24,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553475213] [2019-10-22 08:56:24,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:24,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:24,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013068636] [2019-10-22 08:56:24,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:24,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:24,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:24,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,651 INFO L87 Difference]: Start difference. First operand 204 states and 385 transitions. Second operand 3 states. [2019-10-22 08:56:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:24,658 INFO L93 Difference]: Finished difference Result 139 states and 281 transitions. [2019-10-22 08:56:24,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:24,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 08:56:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:24,659 INFO L225 Difference]: With dead ends: 139 [2019-10-22 08:56:24,660 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:24,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:24,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 08:56:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:24,661 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:24,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:24,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:24,667 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:56:24,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:24 BasicIcfg [2019-10-22 08:56:24,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:24,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:24,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:24,670 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:24,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:23" (3/4) ... [2019-10-22 08:56:24,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:24,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 08:56:24,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 08:56:24,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:56:24,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5ed482bc-e241-4ae4-94e1-ed1ed5df8890/bin/uautomizer/witness.graphml [2019-10-22 08:56:24,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:24,731 INFO L168 Benchmark]: Toolchain (without parser) took 2358.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.2 MB in the beginning and 931.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 151.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,731 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:24,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:24,732 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,732 INFO L168 Benchmark]: RCFGBuilder took 338.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,733 INFO L168 Benchmark]: TraceAbstraction took 1332.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.1 MB in the end (delta: 139.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,733 INFO L168 Benchmark]: Witness Printer took 56.87 ms. Allocated memory is still 1.2 GB. Free memory was 939.1 MB in the beginning and 931.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:24,735 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 338.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1332.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.1 MB in the end (delta: 139.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.87 ms. Allocated memory is still 1.2 GB. Free memory was 939.1 MB in the beginning and 931.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 91 locations, 3 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 774 SDtfs, 285 SDslu, 497 SDs, 0 SdLazy, 92 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=771occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 336 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 12436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...